42889111 has 4 divisors (see below), whose sum is σ = 42938352. Its totient is φ = 42839872.

The previous prime is 42889109. The next prime is 42889117. The reversal of 42889111 is 11198824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42889111 - 2¹ = 42889109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42889117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23290 + ... + 25063.

It is an arithmetic number, because the mean of its divisors is an integer number (10734588).

Almost surely, 2^42889111 is an apocalyptic number.

42889111 is a deficient number, since it is larger than the sum of its proper divisors (49241).

42889111 is an equidigital number, since it uses as much as digits as its factorization.

42889111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49240.

The product of its digits is 4608, while the sum is 34.

The square root of 42889111 is about 6548.9778591777. The cubic root of 42889111 is about 350.0383930673.

The spelling of 42889111 in words is "forty-two million, eight hundred eighty-nine thousand, one hundred eleven".